Supplements purchased in a store can provide vitamins and minerals. However, that is all they provide. Foods, on the other hand, supply not only vitamins and minerals but also carbohydrates, proteins, fats, and fiber. The first three provide calories (as well as various nutrients), and fiber provides bulk for a healthy digestive system. The phytochemicals present are another bonus (see Chapter 2 for details). In addition, it is possible to overdose on certain vitamins and minerals when supplements are used.
Sarah likely has a busy schedule and grabs food whenever she has time. These convenient foods from fast-food restaurants, vending machines, and snack bars are typically high in fat, sugar, or both. One tip to improve her diet is to pack a lunch so she has healthier foods readily available, such as fruit. Starting the day with a whole-grain cereal for breakfast is another good idea, as is regularly choosing a salad when available.
